Base with a light source for operation of a microscope



FIG. 1 is a front, top and right side perspective view of a base with a light source for operation of a microscope showing our new design;

FIG. 2 is a rear, bottom and left side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a right side elevational view thereof; and,

FIG. 8 is a left side elevational view thereof.

The features shown in broken lines in the drawings depict environmental subject matter only and form no part of the claimed design. The dot-dashed lines denote the boundary of the claim and form no part of the claimed design. 

The ornamental design for a base with a light source for operation of a microscope, as shown and described. 